Data centers are actually pretty cool when they're not being used for ANN tech. Most of the internet runs on them. I rent a virtual private server on a datacenter in Germany and use it to run MULTIVERSE.
I say we should require closed cooling loops with no ongoing water costs, and for data centers to produce 110% of their own energy requirements with renewables. That extra 10% will help decarbonise the rest of the economy. That way they become a net positive for the world right now, and in a year or two when the bubble collapses, we get a bunch of cheap, green compute that hobbyists like Myself can use for our little websites. Or they could just turn off the computers and sell the electricity.